Scientists are expecting the samples to include “clues to the origin of the solar system and the source of the water and organic molecules that may have made their way to Earth,” according to a press release.

As this will be the first mission of its kind for NASA, the agency is hoping to include the public by asking those interested for a piece of art that expresses “how the mission’s spirit of exploration is reflected in their own lives.”

The artwork can be a “sketch, photograph, graphic, poem, song, short video or other creative or artistic expression.” You can submit your creation through Twitter or Instagram by March 20, and NASA has compiled a full set of guidelines.

Submissions will be included on a drive to be placed on the OSIRIS-REx spacecraft. It will also carry a chip with more than 442,000 names submitted through the 2014 Messages to Bennu campaign.

Part of the OSIRIS-REx will eventually make it back to Earth in 2021, though not all of it: Only the spacecraft’s sample capsule will return to our surface. The rest, including the drive of artwork, “will stay in space for millennia,” according to principal investigator for OSIRIS-REx, Dante Lauretta.